Soft-gluon resolution scale in QCD evolution equations
F. Hautmann, H. Jung, A. Lelek and 2 more
Physics Letters B · 2017
doi:10.1016/j.physletb.2017.07.005 (opens in a new tab)
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Abstract
QCD evolution equations can be recast in terms of parton branching processes. We present a new numerical solution of the equations. We show that this parton-branching solution can be applied to analyze infrared contributions to evolution, order-by-order in the strong coupling αs, as a function of the soft-gluon resolution scale parameter. We examine the cases of transverse-momentum ordering and angular ordering. We illustrate that this approach can be used to treat distributions which depend both on longitudinal and on transverse momenta.
Abstract licence: CC BY
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